There exists an vulnerability causing an abort() to be called in gRPC. 
The following headers cause gRPC's C++ implementation to abort() when called via http2:

te: x (x != trailers)

:scheme: x (x != http, https)

grpclb_client_stats: x (x == anything)

On top of sending one of those headers, a later header must be sent that gets the total header size past 8KB. We recommend upgrading past git commit 2485fa94bd8a723e5c977d55a3ce10b301b437f8 or v1.53 and above.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-1428
• grpc/grpc@2485fa9
• grpc/grpc#33463
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/grpc/CVE-2023-1428.yml